Find a service by task

Check or apply for a business license

Check local business license or business tax certificate requirements, the right authority and application options.

Before you start

Start with where your business is located and where it will operate. A county license may apply only to unincorporated areas or specific activities; cities can have their own requirements.
Some county offices provide guidance or referrals and do not issue a general business license. Read the entry before choosing an application.
A business license or tax certificate, an FBN/DBA filing, business entity registration and a professional license serve different purposes. Zoning, health and other activity permits may also apply. Business stormwater registration is a separate local programme where required.
Check the license period, renewal date and rules for changes in ownership or location. A renewal may not cover a move or a new owner. Fees and application steps depend on the license category.

1 guide with reviewed service links · San Mateo

Choose a county on the map

Highlighted counties have a reviewed service guide matching this selection. An agency may serve only a city or part of a county.

California58 counties

County directory Reviewed service guides available

Map for browsing; agency service areas may differ.

Map source

U.S. Census boundaries via U.S. Atlas · 2017 edition, simplified for display.

County government · San Mateo

Treasurer-Tax Collector

Business licensing

Check county business-license applicability and zoning reviewOfficial instructions

Confirm whether the business category needs a county license before applying. The Business License Board and Planning/Building review applications; other license or event fees can apply.

Service area: Certain businesses in unincorporated San Mateo County; the source does not require every business to obtain this license. Area details & sources

Confirm applicability before paying

Planning and Tax Collector have separate contact options for checking whether the license is required.

Official information checked October 16, 2026 · Details & sources

Source checked October 16, 2026

San Mateo County official website · San Mateo County — business licensing discovery (opens in a new tab)

Reviewed business licensing instructions

Business Licenses are issued only for certain businesses located in unincorporated San Mateo County. All Business License Applications are reviewed and approved by the County’s Business License Board with the Planning and Building.

Saved evidence: 00f8e62729b25ddd · Agent source review

Full guide, contact details & sources →